An X-linked primary immunodeficiency characterized by a deficiency of circulating B-cells with a corresponding decrease in immunoglobulins and increased susceptibility to infection by pyogenic bacteria after the loss of maternal antibodies.
What The “X” In “Xbox” Stands For?No letter in the English language gets around like X. The 24th letter of the alphabet shows up everywhere, from the popular Xbox to standing in for a signature on legal documents. It represents a chromosome, signifies the multiplication process, and marks “the spot” on treasure maps. Let’s explore just a few of the uses of this versatile letter. The story behind the X in Xbox …
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